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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

To not want baby near unvaccinated toddler?

258 replies

victoriaspomge · 09/02/2026 21:53

So basically my partner wants his half brother's (same dad) younger half brother (same mum) to come and meet our baby.
He has a daughter who is 2 years old who he says is our kids cousin.

My partner is no relation to him or his daughter biologically but because they share a half brother he feels as if it's his brother as well and that they are family.

He dosent really know him and doesn't have his number and has only met him in the last 10 years.

They only hang out if it's with their mutual half brother.

I know the 'brother' is very anti vax and has not got his 2 year old vaccinated despite living in a city where it has had a lot of cases of measles.

Baby is too young to be have the MMR and I am extremely worried about my baby meeting this 2 year old.

AIBU to feel like this?

FullLondonEye · 10/02/2026 09:41

itsthetea · 10/02/2026 09:09

made up numbers but the idea is right - ii may have understated the benefit of the vaccine

if we had 10000 children who got vaccinated we may get 1 who suffered a reaction to the vaccine

if we have 10000 children unvaccinated we may have 5 dead and 50 harmed for life

i know which group I would like my children to be in

there is no conspiracy and death rates are available for analysis

This. Everything we do carries a certian amount of risk. Isn't it normal to go with the lowest risk factors? Especially when trying to protect your children?

Cakeandcardio · 10/02/2026 09:41

TaraC25 · 09/02/2026 22:59

IMO You're being ridiculous.

If you're confident that vaccines work to protect your baby, then surely your baby wouldn't catch anything anyway? Being vaccinated doesn't stop people (or babies/toddlers/children) from spreading and passing viruses.

The toddler could still be breastfed for all you know and have amazing natural immunity!

Well breastfeeding doesn't protect against measles 😅
And measles is a big risk so if people choose not to vaccinate then they really do choose to become social pariahs 🤷🏻‍♀️

FullLondonEye · 10/02/2026 09:40

Having looked as statistics, there have been 957 confirmed measles cases in the last year. That's barely anything compared to the population of the UK.

Yep. It doesn't feel like barely anything though if you or your child are one of the 957 and who either died or suffered lifelong damage from it.

TaraC25 · 10/02/2026 09:39

SinnerBoy · 10/02/2026 09:26

TaraC25 · Today 08:58

Having looked as statistics, there have been 957 confirmed measles cases in the last year. That's barely anything compared to the population of the UK.

That equates to about 100 with compromised immune systems, which take years to recover properly. It makes simple illnesses far more serious.

About 200 will require hospitalisation, with about 50 of them developing pneumonia. One of them will have had potentially fatal encephalitis. Between 10 & 30 of the entire cohort will die as a direct result of catching measles.

One in 9 will develop nerve damage, with the commonest result being visual and hearing problems - they will never recover from this.

But as described by a PP below, lots of children and adults are also damaged from having the vaccine itself. They won't generally appear in the figures because the pharmaceutical companies make themselves untouchable and their disclaimers are vast and thorough.

To each their own.

Ultimately it sounds like the OP has already made her mind up and just wants some cheer leaders.

Every part of parenting, and daily life itself, has risks. Basically: make an educated choice and be lucky.

Good luck OP and I genuinely hope you have a lovely time with your baby and wish them good health, they really do grow quickly so enjoy making memories :)) x

SinnerBoy · 10/02/2026 09:26

TaraC25 · Today 08:58

Having looked as statistics, there have been 957 confirmed measles cases in the last year. That's barely anything compared to the population of the UK.

That equates to about 100 with compromised immune systems, which take years to recover properly. It makes simple illnesses far more serious.

About 200 will require hospitalisation, with about 50 of them developing pneumonia. One of them will have had potentially fatal encephalitis. Between 10 & 30 of the entire cohort will die as a direct result of catching measles.

One in 9 will develop nerve damage, with the commonest result being visual and hearing problems - they will never recover from this.

TwilightAb · 10/02/2026 09:24

This reply has been deleted

Message deleted by MNHQ. Here's a link to our Talk Guidelines.

I don't disagree with you on that (I'm since vaccinated and so are my kids). Luckily as a child no one avoided me because of my vaccination status but I guess that's the 80s for you where people didn't have social media to get themselves all worked up over. I feel sorry for the kids who aren't vaccinated, firstly because of the risks to their health and secondly because they are branded as a risk and to keep away from.

StopTheHyperbole · 10/02/2026 09:20

busyd4y · 10/02/2026 07:48

My children are much older now but when they were babies I wouldn't have had a clue about the vaccination status of all the other children they met. Is it a new thing to be asking this? I'm really surprised you would know this about multiple children.

Are you in the UK? It wasn't even something that was asked about at nursery as I remember a conversation with an Australian friend who was surprised by that

It's because herd immunity protected people and children as it kept up the 95% rate due to people getting their children vaccinated. Measles is a horrific, horrific disease which was pretty much eradicated in the UK, up until that evil man (who I can't even bring myself to name) doctored a research paper that claimed the MMR caused autism. Total and utter piffle. He's been stuck off now thankfully, but the damage he has done with this and I do hold him responsible for the deaths of vulnerable people and children from measles since.

Idiotic people still believe the nonsense so unfortunately the UK has now slipped down the list of safe countries without measles due to absolute idiots like this half brothers half brother who won't vaccinate their child. The levels of herd immunity need to stay above 95% as it protects those who cannot get vaccinated due to immune issues etc.

What we are seeing now is the cause and effect of this dip.

itsthetea · 10/02/2026 09:09

freakingscared · 10/02/2026 09:05

I can reply the same way , my son had all his vaccines until the mmr where he was brain damaged for life . Consequently none of his siblings had it . None had measles , my son had measles himself 2 years after . Attacking others by calling them Google readers is offensive when i live daily with the consequences of vaccines and see people on this thread calling names to people who don’t vaccine without even trying to understand the reasons . So with all due respect I maintain what I say when I say no child vaccinated or not can pass on what they don’t have . I suggest OP maintain her child at home away from baby groups , swimming , and any other baby activities because nobody is obligated to disclose what their decision about vaccines is .

made up numbers but the idea is right - ii may have understated the benefit of the vaccine

if we had 10000 children who got vaccinated we may get 1 who suffered a reaction to the vaccine

if we have 10000 children unvaccinated we may have 5 dead and 50 harmed for life

i know which group I would like my children to be in

there is no conspiracy and death rates are available for analysis

itsthetea · 10/02/2026 09:06

I wouldn’t want much to do with a family of anti vaxxers independent of the viral risk to baby. Any more than I would want flat earthers ro be spending lots of time with my children.

but it’s clear your partner views them as family - and family isn’t simple blood lines for many people

and yes you will pass by unvaccinated kids every day - although you are less likely to be in close contact with them until you are attending toddler groups - when your child will be old enough to be vaccinated

don’t some eu countries insist on vaccination before kids go to school ? The uk may be a bit behind in this

so I think you have to agree to a low level of contact for your partners sake but try and control it - outside meetings , short sessions, limited physical contact

and if they ask just be blunt - you think they are risking their children’s health their choice but you won’t let them risk your child’s health

freakingscared · 10/02/2026 09:05

FullLondonEye · 10/02/2026 08:39

We all know we can't control everything about the environment around us, but as a parent it's our job to protect our children as well as we can with the knowledge we have. The OP is not being overprotective. Refusing to take her child into public spaces in case there are unvaccinated children would be over the top. Knowingly exposing her baby to an unvaccinated child is not overprotective and would at best be irresponsible.

It's very easy to be scathing of vaccines when you don't live with the effects of the diseases they prevent.

@victoriaspomge I had measles at age 4. I have had to spend my life dealing with the after effects so I can speak with experience when I tell you that you are doing the right thing. We're all allowed an opinion on anything of course but on this one I've recently unilaterally decided that my own pretty horrible personal experience means mine carries more weight than someone who once Googled something or read it on Facebook. It's just not worth the risk.

I can reply the same way , my son had all his vaccines until the mmr where he was brain damaged for life . Consequently none of his siblings had it . None had measles , my son had measles himself 2 years after . Attacking others by calling them Google readers is offensive when i live daily with the consequences of vaccines and see people on this thread calling names to people who don’t vaccine without even trying to understand the reasons . So with all due respect I maintain what I say when I say no child vaccinated or not can pass on what they don’t have . I suggest OP maintain her child at home away from baby groups , swimming , and any other baby activities because nobody is obligated to disclose what their decision about vaccines is .

RampantIvy · 10/02/2026 09:05

Having looked as statistics, there have been 957 confirmed measles cases in the last year. That's barely anything compared to the population of the UK.

957 cases more than there should have been Hmm

You are probably too young to have had measles. I have had it. It has affected my hearing and my eyesight.

Back in the day children used to have to stay in isolation hospitals if they caught measles.

You need to educate yourself.

TaraC25 · 10/02/2026 08:58

Having looked as statistics, there have been 957 confirmed measles cases in the last year. That's barely anything compared to the population of the UK.

It's a bit different if the toddler in question was snotty/sneezing and expecting to visit your young baby, but if they're in full health they're a very very minimal risk.

Maybe the compromise could be to meet out and about in a public space rather than have them to your home.
And realistically, how much attention is a toddler going to pay a baby anyway - barely any.

OP welcome to the world of parenting: where you'll be judged if you do, or judged if you don't.

Speak with your partner and come up with a compromise you're both happy with, but ultimately it's his child too and he also has a say in who baby meets.

APatternGrammar · 10/02/2026 08:53

A baby doesn’t have to be seriously ill to have long term consequences of an illness so it’s about more than the risks of catching it and dying or being hospitalised. My son caught RSV at two weeks old (before the vaccine was available). He wasn’t seriously ill or hospitalised so wouldn’t appear in the statistics, but he’s had eight years of consequences from it so far including having to call an ambulance for breathing difficulties four times and missing a lot of school.
So stick to your guns when you know a child is unvaccinated, it’s not only about the unlikely outcomes.

MonsteraDeliciosa · 10/02/2026 08:51

Can you not distinguish between known risk factors and unknown?

There are a frightening number of posters on this thread who seemingly can't.

FullLondonEye · 10/02/2026 08:51

MonsteraDeliciosa · 10/02/2026 08:49

Of course they bloody don't! 😂

Well I'm shocked. Gobsmacked. Oh no, hang on...

RampantIvy · 10/02/2026 08:50

Simplesbest · 10/02/2026 08:41

Are you never going to attend toddler groups or leave the house? How do you know if kids in the park/softplay are vaccinated. Understand yours is a baby and your only child atm. But it's not realistic. I wouldn't stop taking my older kids out to their groups in case their newborn sibling caught something.
Sounds just like you're not up for having anything to do with this person or their child.
I bet you start baby groups and won't have a clue who is / isn't vaccinated. Newsflash people don't have to tell you or can even lie.

Edited

It's all about dealing with known risks. It's the same with covid. Why would you knowingly put a baby at risk when you know the risks are higher?

Can you not distinguish between known risk factors and unknown?

I agree. Too many posters have no understanding about risks and how to minimise them.

FullLondonEye · 10/02/2026 08:50

Simplesbest · 10/02/2026 08:41

Are you never going to attend toddler groups or leave the house? How do you know if kids in the park/softplay are vaccinated. Understand yours is a baby and your only child atm. But it's not realistic. I wouldn't stop taking my older kids out to their groups in case their newborn sibling caught something.
Sounds just like you're not up for having anything to do with this person or their child.
I bet you start baby groups and won't have a clue who is / isn't vaccinated. Newsflash people don't have to tell you or can even lie.

Edited

Every time you go out in a car you run the risk of crossing paths with a drunk driver because life is full of unknown risks. Would you choose to be a passenger - with your child - in a car with a driver you know to be drunk?

Every time you eat chicken you are at risk of food poisoning, but we keep it in the fridge and cook thoroughly to avoid that. Would you happily eat chicken you've seen sitting out, uncovered, on a worktop all day and that's still pink in the middle?

Can you not distinguish between known risk factors and unknown?

RampantIvy · 10/02/2026 08:50

Girliefriendlikespuppies · 10/02/2026 08:35

Unless you’re keeping your baby at home for the next year or so how will you possibly know if everyone they come into contact with is vaccinated or not?

Personally I think YABU, you sound really snobby and sneery towards your partners family.

It's all about dealing with known risks. It's the same with covid. Why would you knowingly put a baby at risk when you know the risks are higher?

MonsteraDeliciosa · 10/02/2026 08:49

FullLondonEye · 10/02/2026 08:46

Do you have reliable sources for this information? Double blind tests, peer reviewed data etc.? Not something you read on Facebook.

Of course they bloody don't! 😂

Playingvideogames · 10/02/2026 08:49

MummytoE · 09/02/2026 21:58

No you are not being unreasonable at all. Parents need to realise there are consequences to not getting their children vaccinated, and in this case it's not meeting the baby.

This. Their choice not to vaccinate, your choice not to want contact with unvaccinated. Choices are not always free from consequences.

randomchap · 10/02/2026 08:48

This reply has been deleted

Message deleted by MNHQ. Here's a link to our Talk Guidelines.

FullLondonEye · 10/02/2026 08:46

This reply has been deleted

Message deleted by MNHQ. Here's a link to our Talk Guidelines.

Do you have reliable sources for this information? Double blind tests, peer reviewed data etc.? Not something you read on Facebook.

TwilightAb · 10/02/2026 08:45

wishingonastar101 · 10/02/2026 08:42

Absolutely not! I would not let my children hang out with unvaccinated kids but also, I don't want to hang out with anti-vax weirdos.

I'm afraid you will have little choice. They will undoubtedly go to nursery/ school with some unvaccinated kids. Us unvaccinated kids don't carry a sign you know.

wishingonastar101 · 10/02/2026 08:42

Absolutely not! I would not let my children hang out with unvaccinated kids but also, I don't want to hang out with anti-vax weirdos.

Simplesbest · 10/02/2026 08:41

Are you never going to attend toddler groups or leave the house? How do you know if kids in the park/softplay are vaccinated. Understand yours is a baby and your only child atm. But it's not realistic. I wouldn't stop taking my older kids out to their groups in case their newborn sibling caught something.
Sounds just like you're not up for having anything to do with this person or their child.
I bet you start baby groups and won't have a clue who is / isn't vaccinated. Newsflash people don't have to tell you or can even lie.